ANTICORROSIVE COMPOSITIONS FOR ZINC-CONTAINING PRIMER COATING CONTAINING HOLLOW GLASS SPHERES AND CONDUCTING PIGMENT

摘要

1. A coating composition comprising a) a binder system selected from epoxy binder systems, polysiloxane binder systems, polyurethane binder systems, cyclized rubber binder systems and phenoxy resin binder systems, b) zinc particles, c) hollow glass microspheres; and d) a conductive pigment selected from the group consisting of graphite, carbon black, aluminum-based pigments, black iron oxide pigment, antimony doped tin oxide, mica coated with dope antimony tin oxide, indium and tin oxide, carbon nanotubes, carbon black fibers and any mixture thereof 2. The coating composition of claim 1, wherein the conductive pigment is selected from carbon black, carbon nanotubes, graphite, and any mixture thereof. The coating composition of claim 2, wherein the conductive pigment is graphite. 4. The coating composition of claim 2, wherein the conductive pigment is carbon black. The coating composition of claim 1, wherein said binder system is an epoxy based binder system, a polyurethane-based binder system, or a polysiloxane-based binder system. The coating composition of claim 1, wherein said binder system is an epoxy based binder system or a polysiloxane based binder system. The coating composition of claim 1, wherein said binder system is an epoxy resin binder system. The coating composition of claim 1, wherein the conductive pigment is present in an amount of from about 0.5 to 5.0% by volume of solids, such as from about 0.5